lt3470its8-trpbf Linear Technology Corporation, lt3470its8-trpbf Datasheet - Page 3

• Manufacturer Part Number: lt3470its8-trpbf
• Description: Micropower Buck Regulator With Integrated Boost And Catch Diodes
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
The
V
PARAMETER
Minimum Input Voltage
Quiescent Current from V
Quiescent Current from Bias
FB Comparator Trip Voltage
FB Pin Bias Current (Note 3)
FB Voltage Line Regulation
Minimum Switch Off-Time (Note 5)
Switch Leakage Current
Switch V
Switch Top Current Limit
Switch Bottom Current Limit
Catch Schottky Drop
Catch Schottky Reverse Leakage
Boost Schottky Drop
Boost Schottky Reverse Leakage
Minimum Boost Voltage (Note 4)
BOOST Pin Current
SHDN Pin Current
SHDN Input Voltage High
SHDN Input Voltage Low
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3470E is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
IN
= 10V, V
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
CESAT
SHDN
= 10V, V
IN
BOOST
= 15V, V
BIAS
= 3V unless otherwise specified.
CONDITIONS
V
V
V
V
V
V
V
V
H-Grade
4V < V
I
I
V
V
I
I
V
I
V
I
V
SW
SW
SH
SH
SH
SW
SHDN
BIAS
BIAS
SHDN
BIAS
BIAS
FB
FB
FB
FB
SW
SW
SHDN
= 100mA (TS8 Package)
= 100mA (DD8 Package)
= 30mA
Falling
= 1V, E and I-Grade
= 100mA (TS8 Package)
= 100mA (DD8 Package)
= 0V
= 0V
= 100mA
= 10V
= 10V, V
= 3V, Not Switching
= 0V, Not Switching
= 3V, Not Switching
= 0V, Not Switching
IN
= 0.2V
= 0.2V
= 2.5V
< 40V
BIAS
= 0V
with statistical process controls. The LT3470I specifications are
guaranteed over the –40°C to 125°C temperature range. LT3470H
specifications are guaranteed over –40°C to 150°C temperature range.
Note 3: Bias current flows out of the FB pin.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
Note 5: This parameter is assured by design and correlation with statistical
process controls.
●
●
●
●
●
●
●
1.228
MIN
250
2.5
0.0006
1.250
TYP
500
215
215
325
225
630
630
650
0.7
0.2
0.2
1.7
0.1
0.1
0.1
10
35
25
35
35
35
7
1
A
= 25°C.
1.265
MAX
0.01
150
225
300
435
775
775
0.5
0.5
1.5
1.5
2.2
0.2
18
50
60
80
12
4
2
2
5
LT3470
UNITS
3470fc
3
%/V
mV
mV
mA
mA
mV
mV
mV
mA
µA
µA
µA
µA
µA
µA
nA
nA
nA
µA
µA
µA
µA
ns
V
V
V
V
V